I am looking for a free Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image that will let me to perform NDVI for the pilot crop health/soil moisture that can go as far back ten years or so.

Thank you everyone for the information. My question here is do I need to download for each ASTER for each year go back 10 ? I have bee looking at these websites and looks like they have similiar ASTER but not sure of the dates or years ? HELP !!!
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PROBERTSep 21 '13 at 14:04

3 Answers
3

You can easily download freely available ASTER Level 1B (at-sensor calbirated radiances) from the USGS EarthExplorer site. A simple quick search for a polygon roughly covering New Mexico returns > 100 results, but individual scenes are much smaller, so for a full cover of the state you'd have to stitch them together. USGS Glovis should have the same data, though an older interface.